Finding the Fourth Proportional to 3,408.73, 5,112 and 1,099.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,408.73 : 5,112 = 1,099.69 : x
2. Step 2: Convert to fraction form
   3,408.73/5,112 = 1,099.69/x
3. Step 3: Cross multiply
   3,408.73x = 5,112 × 1,099.69
4. Step 4: Simplify right side
   3,408.73x = 5,621,602.50
5. Step 5: Solve for x
   x = 5,621,602.50/3,408.73
6. Step 6: Final answer
   x = 1,649.18